Where are you and what is the weather like?
I would say a water slide park but it might be too cold where you are? Snowboarding? White water rafting is a great idea, as you mentioned. Paintball is great too. Think of shit you did as a boy growing up and put a spin on it. Build a quick tree house in the woods and shoot BB guns at little birds and sht. Stuff like that can be really fun with out alcohol as long as you arent afraid to get creative with it.
I would say a water slide park but it might be too cold where you are? Snowboarding? White water rafting is a great idea, as you mentioned. Paintball is great too. Think of shit you did as a boy growing up and put a spin on it. Build a quick tree house in the woods and shoot BB guns at little birds and sht. Stuff like that can be really fun with out alcohol as long as you arent afraid to get creative with it.